NEW BOOKS trometry among organic chemists, but a t a price. Their glib use all too often produces arguments that are far more satisfying to the writer than to the reader in search of understanding. The sparsity of such jargon in Beynon's book is a t times a disadvantage, but most of the time it is refreshing. Substoichiometry in Radiochemical Analysis. Jaromir Ruzicka, Jiri Stary. ix 161 pages. Vol. 30. International Series of Monographs in Analytical Chemistry. Pergamon
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Press, inc., ..$.@l 2ist St., L o n g island City,4V.Y. 11101. 1968. 87 Reviewed b y G . W. Leddicotte, Research Reactor Facility, University of Missouri, Columbia, M o .
ut you can depend upon it to collect fractions. People have for years! The A 0 Automatic Fraction Collector has compiled an impressive record of accurate, reliable, and reproduci b l e performance in thousands of laboratories. Some units have been on the job for 10 years! We could face-lift it, but why? That would just cost you more. This tough old workhorse can coll e c t equal, predetermined, liquid samples by three methods - volum e t r i c siphoning, t i m e d flow, and drop counting. Use test tubes, culture or centrifuge tubes-as many as 240 at once! A variety of accessories permits an exceptional range of applications. For details, contact your distributor or write to us.
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The ideas promoted by the authors of this monograph provide an interesting approach t o the use of the potentials of nuclear science methodology in the determination of substoichiometric amounts of the elements. Chapter 5 is the most meaningful chapter in the monograph. It has am excellent source of sensitive, specific, and rapid methods of analysis for at least 23 elements, many of which are important to researchers concerned with trace substance research interests. I n almost all instances, an analyst can easily adapt these methods for use in the assay of almost any type of sample material. Chapter 4 offers some useful information on the general techniques applied in the methods described in Chapter 5 . However, no attempt is made to reference any of this general information, much of which has been ably documented in detail elsewhere by the authors. Kith respect to the rest of the book, this reviewer finds that it contains better than average material; however, the manner in which this information is presented makes it difficult to achieye a rapid comprehension of the authow' intents. It would appear t o have been more practical to review and generally discuss the nuclear methods being considered,-i.e., activation analysis, isotope dilution, and radiometric-in a single chapter and then elaborate upon the principles and separation techniques that could be used in carrying out the substoichiometric determination by a particular technique. For example, in Chapters 2 and 3, the authors give la few paragraphs about specific techniques and then immediately propose theoriee on separation techniques-e.g., solvent extraction of metal chelatesso that the prime intent of each chapter is somewhat overshadowed by material which could be best presented as a separate topic,
Although it would be desirable t o have a more favorable format for this introductory material and certain other portions of the monograph (especially Chapters 6, 7 , and 8), the monograph is a potentially valuable aid to any analyst. It provides him with unique ideas on how t o use certain nuclear methods of analysis for trace element determinations. Analysis of High-Purity Materials.
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I . P. Alimarzn, Editor. xviii 684 pages. Daniel D a u e y & Co., Inc. 964 Asylum Aue.. HartJord, Co?a?i. 06207. 1968. 320.26 Reviewed by G . H . Morrison, Department of Chemistvy, Cornel1 University, Ithaca, N. 1'. 14850 In no other field of modern science and technology has the requirement of high purity been more stringent than in the area of semiconductor materials. In order t o improve the technology of the preparation of semiconductor materials and their compounds and t o produce high-quality semiconductor derices with predetermined properties, it has been neceesary to develop methods for the determination of impurities with detection limits as low as 10-fl-10-87~. The book under review is an English translation of the original Russian edition, "Rletody Analiza Veshchestv Vysokoi Chistoty," published in 1965. It represents a collection of procedures developed in a number of institutes of the Academy of Sciences of the LTCT8SR and other departments for the determination of trace impurities in high-purity materials used in radioelectronic and semi-conductor technology. The introductory articles, which describe the position reached in the USSR in the control of the purity of different materials, have been written by their leading experts in the field. Subjects discussed include control of high-purity materials, potential deveIopments of modern anaIytica1 methods, improvement in their sensitivity and accuracy, and experimental techniques t o be adopted when working with high-purity materials. Detailed procedures are given for the determination of trace impurities in silicon and its compounds, germanium and its compounds, gallium, indium, thallium, arsenic, antimony, compounds of the AIIIBv type, phosphorus, aluminum, lead and its compounds, bismuth and its Compounds, tin, zinc, cadmium, sulfur, selenium, tellurium, boron, iodine, graphite, compounds of the AIIBvI type, and reagents. According to a translator's note, in many instances, industrial routine analyses in the Soviet Union are carried out by specially trained technicians rather
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In 1933, Welch pioneered t h e internal vane design of mechanical vacuum pumps, long since proved t o be t h e m o s t efficient, vibration-free, quiet, long lasting, trouble-free vacuum p u m p s ever marketed. Although many o t h e r manufacturers have switched t o the internal vane design, only Welch produces Duo-Seal pumps, t h e pumps with t h e patented DuoSeal gas discharge design, which eliminates repumping gases.
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than by graduate chemists. This accounts for the fact that the description of analytical procedures given in this book is found to contain much detail, partly repetitive, which would seem t o be stressing the obvious, but is really intended not to leave any room for doubt as to the correct procedure t o be followed. The techniques of trace analysis covered in this book reveal the state of the art in the USSR as of 1965. ,4majority of the procedures involve chemical preconcentration and separation followed by colorimetric or spectrophotometric determination of individual trace elements. Also quite prominent are chemical preconcentration-emission spectrographic methods for survey analyses. To a lesser extent activation analysis. polarographic, and luminescent methods are employed, all accompanied by the necessary enrichment and/or separation steps to achieve adequate sensitivity or freedom from interferences. I t is interesting t o note that although continuous reference in the book is made t o the great potential of spark source mass spectrometry for the analysis of high-purity materials, only very limited use is made of this valuable technique, presumably due to the nonavailability of instruments. Also, noticeably absent are flame emission and atomic absorption methods. This book is a welcome addition to the growing list of authoritative texts on trace analysis. Although it is restricted to the analysis of semiconduct,or materials, it provides considerable detail of great value to the practicing analyst concerned with this demanding field. The book is mitten in a clear and straightforward manner and the Israel Program for Scientific Translations is to be congratulated for the high quality of the translation. The only annoyances encountered by the reviemr were the absence of a subject index and the frequent use of the word “etalon” for “standard” in this English edition.
subject matter of the conference encompassed general problems of luminescence, the problems of organic and inorganic luminescent materials, especially of oxides and sulfides and rare earth metal compounds, the phenomena of injection luminescence, solid state lasers, and the application of luminescence. Inorganic Qualitative Analysis: A Short Course for Introductory Chemistry. 2 n d Edition. Richard B . H a h n , Frank J . TVelcher. vztz
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326 pages. D . V a n ,Yostrand Co., Iiic., 120 Alexander St., P r i m e t o n , LY.J . 08540. 1968. 86.40
This book was written as a text for Freshman chemistry where qualitative analysis is offered in the laboratory portion of the latter part of general chemistry. Changes made over the first edition include a complete reorganization of the theoretical sections, and substantial revisions in the chapters on chemical equilibrium, chemical kinetics, and ionics. A new chapter deals with oxidation-reduction. Experimental Procedures in Elementary Qualitative Analysis. Es-
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march S.Gilreath. vii 116 pages. AIcGraw-Hill Book Co., $30 TP. 42nd St., LVew Y o r k , S.Y . 10056. 1968. Paperbound. 83.25 This text has been designed for use in schools where a separate course on qualitatire analysis has been abandoned and a simplified scheme of analysis is used within the laboratory exercises of general chemistry. The analytical procedures within the cation scheme are based on the Fresenius system of analysis, but they have been greatly altered in terms of efficiency and simplicity. The anion-analysis scheme is adapted from one developed by J. T. Dobbins and H. -4. Ljung [ J . Chem. Educ. 12, 586 (1935) 1. Analysis and Characterization of Oils, Fats and Fat Products. Vol.
H . A . Boekenoogen, Editor. ix J o k ? ~Tt’iley &. Sons, Ilzc., 605 Third Ave., Are% York, N . Y . 10016. 1.968. $26.50 2.
New Books Proceedings of the International Conference on Luminescenee, Budapest, 1966. Vol. 1. Vol. 2. G.
Sxigeta, Editor. 2166 pages. Akadbmaiai Kiado’, Budapest V . , Alkotmany U.21.) H u n g a r y . 2968. $7.2 These two Yolumes contain in English the papers presented a t the International Conference on Luminescence which was held in Budapest in 1966. The three introductory lectures by Prof. Garlick, Prof. Levshin, and Prof. 8eitz are in both English and Russian. The
+ 681 pages.
The first volume of this series appeared in 1961. T’olume 2 contains seven articles on various aspects of fat analysis and author and subject indexes. Titles of the articles and their authors follow: Mass Spectrometry in Fat Analysis by Einar Stenhagen; Measurement of Oil Colour by Maurice Naudet and Elie Sambuc: Paper and Thin-layer Chromatography in Fat Chemistry by Peter Vagel and Theophi1 Wieske; $nalysis of Glycerides
